Main Plaza celebrates Jazz Appreciation Month with a free concert series highlighting SA’s diverse jazz scene. Nine performances lead up to the crowning of this year’s “Jazzy King and Queen”: George Prado & Regency Jazz Band (11:30 a.m. Mon, Apr 4), Joan Carroll (5:30 p.m. Mon, Apr 4), John Magaldi Quartet with special guest Richie Cole (11:30 a.m. Tue, Apr 5), Henry Brun & the Latin Playerz (5:30 p.m. Tue, Apr 5), Bett Butler (11:30 a.m. Wed, Apr 6), River City Orchestra (5:30 p.m. Wed, Apr 6), Ron Wilkins Group (11:30 a.m. Thu, Apr 7), Small World (5:30 p.m. Thu, Apr 7), and Joe Posada (11:30 a.m. Fri, Apr 8), who, along with Mary Parchman, becomes Fiesta royalty following Acoustic Dream’s finale (7 p.m. Fri, Apr 8). Free (food and drinks available for purchase onsite), Main Plaza, 115 N Main, mainplaza.org.